Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
MHT CET2007PhysicsSemiconductors

When intensity of incident light increases

Options

  1. Aphoto-current increases
  2. Bphoto-current decreases
  3. Ckinetic energy of emitted photoelectrons increases
  4. Dkinetic energy of emitted photoelectrons decreases

Correct answer

A. photo-current increases

Step-by-step solution

According to Einstein's theory of photoelectric effect a single incident photon ejects a single electron. Therefore, when intensity increases, the number of incident photons increases, so number of ejected electrons increases, hence, photocurrent increases. Now, maximum energy of = 1 2 m v_ ² and 1 2 m v_ ²=e V₀ , where V₀ is stopping potential. Thus, the maximum kinetic energy of the electrons does not depend upon the intensity of the incident rays, because the stopping potential is not affected by the increase of

Practice Semiconductors on Quantrex Academy →

More from Semiconductors

Pick out the correct statement from the following; 2026What is the minimum wavelength of radiation required to detect a p-n junction diode made of a semiconductor having band gap 3.3 eV. [Planck's constant h = 6.6 10³⁴ J.s ] 2026Genetic Engineering is related to the principle of 2026A silicon sample is doped simultaneously with donor impurity phosphorus at a concentration of N_D = 3 10²² m⁻³ and acceptor impurity boron at a concentration of N_D = 2.8 10²² m⁻³ 2026In a PN junction diode, the forward bias is increased gradually from 0 Volt to 1 Volt. Which of the following statements is correct? 2026In the circuit given, the reverse breakdown voltage of the Zener diode is 4.8 V. The current through the Zener and the power dissipation in Zener is: 2026An n-type and p-type semiconductor can be obtained by respectively doping pure silicon with 2026In which of the following figures, diode is reverse biased? 2026 Full Semiconductors list All MHT CET PYQs